Nearsight prevents the activation of "long ranged" abilities, which seems to include any ability that can input targets via the minimap. By virtue of disabling the second cast, Nearsight will interrupt Elastic Slingshot. This may be a bug, although it is thematically appropriate for an effect that removes the target's ability to see.

Crowd control applied by one's self or an ally cannot be countered in any way (neither reduced, resisted, nor removed), with the exception of self-slows.

Airborne

A unit that is made airborne is moved in a specified direction or to a specific point. For the duration, the unit is also stunned and cannot move, attack, cast abilities, activate items or use the summoner spellsFlash and Teleport.

Interrupts:

Interrupts all channeled and charged abilities, as well as Glacial Storm, all dash abilities and other airborne effects.

Reduction:

Only the stun component duration is reduced by Tenacity, which stacks multiplicatively. Forced movement's execution time remains unaffected.

To expand upon the countering of airborne effects, consider that the effects are made up of two components: a movement modifier (called a "move block" by Riot, referring to a chunk of code) and a stun (which is responsible for the disabling attacking and casting). As a general rule, the most recent move block will over-rule any previous move blocks, which is how Alistar'sHeadbutt and Pulverize combo functions. This rule also extends to all beneficial movement modifiers, such as dashes and blinks, which is why Rocket Grab and Rocket Jump will over-rule each other depending on their order of activation. Most beneficial movement modifiers do not prevent the activation of abilities, allowing Tristana to still activate abilities during Rocket Jump but not during Rocket Grab).

Through the use of cleansing effects or tenacity, players can remove the stun and subsequently activate abilities such as Flash or champion-specific dashes to break the airborne's move block.

Note that Cleanse is special-cased to not remove the stunning effects, but is still available to cast. One or the other may be a bug.

In some instances, the stun duration is longer than the move block (e.g. Sion'sUnstoppable Onslaught), but in most cases they are the same duration. There have been cases in the past where the stun duration was shorter, but this usually lead to bug-like interactions and was later "fixed" (e.g. Azir'sEmperor's Divide did not apply any stun at all in the initial charge on the ability, which allowed his enemies to use Flash/dash to supersede the charge's knockback and get over the wall).

Knockback

The target is made airborne in a direction directly away from the point of cast.

Blind

A unit that is blinded will "Miss" their basic attacks, similar to when attacking a target with dodge. Missed attacks will fail to deal damage or apply on-hit effects, with the exception of Rolling Thunder and Devastating Charge. Unlike Disarm, Blind does not prevent the unit from declaring attacks. Blind causes Graves' shotgun to fire pellets with a random spread, excluding the direction of his target.

Interrupts:

Does not interrupt any abilities, but will prevent on-hit effects from being triggered. This does not waste the effects, however, and they will simply wait until a successful attack lands.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Blind for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Cripple

Resisted by Highlander, Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Slow for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Disarm

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Disarm for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Forced action

Charm

A unit that is charmed will move toward the source for the duration, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate items or use the summoner spellsFlash and Teleport.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Charm for the duration of the dash, but the target will be affected upon landing if the disable duration permits. The slow is also resisted by Highlander.

Fear / flee

A unit that is fleeing will move directly away from the source, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate items or use the summoner spellsFlash and Teleport. Versus non-champions, flee instead causes the target to move around aimlessly or stand immobilized.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Flee for the duration of the dash, but the target will be affected upon landing if the disable duration permits. The slow is also resisted by Highlander.

Uniquely to Volibear, fear slows the target by 100% which causes it to stay in place and turn around aimlessly instead of away from the source.

Taunt

A unit that is taunted will attempt to attack the source for the duration, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate item or use the summoner spellsFlash and Teleport.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Taunt for the duration of the dash, but the target will be affected upon landing if the disable duration permits. The slow is also resisted by Highlander.

Nearsight

A unit that is nearsighted has their sight radius reduced by 900 and loses their allied vision (i.e. their ability to see what their allies see). The target is also unable to activate "long ranged" abilities even if the target is visible, which appears to cover any ability that can be targeted using the map. For example: Enchanted Crystal Arrow, Stand United and Teleport. This may be a bug.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Root for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Silence for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Silence for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Sleep

A unit that is asleep is unable to control its movement, declare attacks, cast abilities, activate items or use the summoner spellsFlash and Teleport for the duration, as with stun. The duration is substantially longer than other crowd control effects, but will be interrupted if the target takes damage.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Stun for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Resisted by Highlander, Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Slow for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Stun for the duration of the dash, but the target will be affected upon landing if the disable duration permits.

Suspension

A unit that is suspended is made Airborne on the spot and is also stunned, preventing them from moving, attacking, casting abilities, activating items or using the summoner spellsFlash and Teleport. The distinction between Suspension and a traditional Airborne is that a Suspension is affected by crowd control reduction and can be fully removed by cleansing effects.

Interrupts:

Interrupts all channeled and charged abilities, as well as Glacial Storm, all dash abilities and other airborne effects.

Resisted by Black Shield, Ragnarok, Riposte and Void Shift. Dashes that grant immunity to disables will ignore the effects of Stun for the duration of the dash, but the target will be affected upon landing if the disable duration permits.